Choose the One Alternative That Best Completes the Statement or Answers

question 399

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-In a Psychology class, the students were tested at the end of the course on a final exam. Then they were retested with an equivalent test at subsequent time intervals. Their average scores after t months are given in the table.
$\begin{array}{l|ccccc}\text { Time, } \text { (in months) } & 1 & 2 & 3 & 4 & 5 \\\hline \text { Score, } \mathrm{y} \text { (in percentage) } & 86.2 & 85.7 & 85.4 & 85.2 & 85.0\end{array}$
Using a graphing utility, fit a logarithmic function $y = a + b \ln x$ to the data. Using the function you found, estin how long will it take for the test scores to fall below $84 \%$ . Express your answer to the nearest month.

• A) 8 months
• B) 12 months
• C) 20 months
• D) 10 months

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Definitions:

Casting Department

The Casting Department in a manufacturing setting is where raw materials are poured into molds to form parts or products through the casting process.

Predetermined Overhead Rate

An estimated rate used to allocate manufacturing overhead costs to individual products based on a certain activity.

Machine-Hours

A measure of production output or activity, where one machine-hour equals one hour of operation of a machine.

Assembly Department

An area in a manufacturing plant where parts are put together to form the end products.